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A high-performance MUX-direct digital frequency synthesizer with quarter ROMs

Hao Zhikun, Zhang Qiang, Ni Weining and Shi Yin

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Abstract: This paper presents a detailed description of a high-performance direct digital frequency synthesizer (DDFS) using optimized quarter ROMs. To improve the working frequency and spectral purity, an original quarter ROMs structure in 0.13 μm CMOS is brought forward and implemented. The working frequency is increased by 40% compared with Yuan Ling's method[1] of implementing a segmented DAC based DDFS. It has been implemented in 0.13 μm CMOS technology. The DDFS has a resolution of 10 bits with a measured SFDR 54 dBc. Its maximum operating frequency is 1.2 GHz by using six pipelining stages. Analytical investigation of improving spectral performances by using dual-slope approximation and pipeline is also presented.

Key words: MUX-direct digital frequency synthesizers

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    Received: 20 August 2015 Revised: 05 September 2011 Online: Published: 01 January 2012

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      Hao Zhikun, Zhang Qiang, Ni Weining, Shi Yin. A high-performance MUX-direct digital frequency synthesizer with quarter ROMs[J]. Journal of Semiconductors, 2012, 33(1): 015008. doi: 10.1088/1674-4926/33/1/015008 Hao Z K, Zhang Q, Ni W N, Shi Y. A high-performance MUX-direct digital frequency synthesizer with quarter ROMs[J]. J. Semicond., 2012, 33(1): 015008. doi: 10.1088/1674-4926/33/1/015008.Export: BibTex EndNote
      Citation:
      Hao Zhikun, Zhang Qiang, Ni Weining, Shi Yin. A high-performance MUX-direct digital frequency synthesizer with quarter ROMs[J]. Journal of Semiconductors, 2012, 33(1): 015008. doi: 10.1088/1674-4926/33/1/015008

      Hao Z K, Zhang Q, Ni W N, Shi Y. A high-performance MUX-direct digital frequency synthesizer with quarter ROMs[J]. J. Semicond., 2012, 33(1): 015008. doi: 10.1088/1674-4926/33/1/015008.
      Export: BibTex EndNote

      A high-performance MUX-direct digital frequency synthesizer with quarter ROMs

      doi: 10.1088/1674-4926/33/1/015008
      • Received Date: 2015-08-20
      • Accepted Date: 2011-04-18
      • Revised Date: 2011-09-05
      • Published Date: 2011-12-28

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